i cant see the graph
a4 - 3a2 - 1
step 1 :
equation at the end of step 1 :
((a4) - 3a2) - 1
step 2 :
trying to factor by splitting the middle term
2.1 factoring a4-3a2-1
the first term is, a4 its coefficient is 1 .
the middle term is, -3a2 its coefficient is -3 .
the last term, "the constant", is -1
For this case we must rationalize the following expression:
Multiply the numerator
Quick answer, it's B.